# init(targetEntity:linearImpulse:) Creates a new impulse action. ``` init(targetEntity: ActionEntityResolution = .sourceEntity, linearImpulse: SIMD3 = [0, 1, 0]) ``` ## Parameters `targetEntity` The entity that the impulse acts upon. `linearImpulse` The impulse in newton seconds (in physics simulation space). --- Copyright © 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)